Strategy for Japan-Italy Seminar 2003
Formation of the First Generation of Galaxies: Strategy for the Observational
Corroboration of Physical Scenarios
第一世代銀河の形成： 物理的シナリオの観測的実証へ向けての戦略
December 1-6, 2003, Niigata University, JAPAN
Japan-Italy Seminar 2002
July 8-10, 2002, Arcetri Obs, Firenze, Italy
Participants
Members on Japan Side
Members on Italy Side
梅村雅之(Chair)
中本泰史
米原厚憲
廣居久美子
西亮一
水澤広美
須佐元
森正夫
北山哲
大向一行
Andrea Ferrara (Chair)
Raffaella Schneider
Marialuce Bruscoli
Simone Marri
Antonella Maselli
Ruben Salvaterra
Simone Bianchi
Marialuce Bruscoli
Benedetta Ciardi
Alessio Fangano
Francesco Haardt
Hiroyuki Hirashita
Ilian Iliev
Simone Marri
Antonella Maselli
Vladimiro Noce
Phillip Richter
Ruben Salvaterra
Evan Scannapieco
Raffaella Schneider
Filippo Sigward
Marcos Valdes
Topics covered
1. Formation and evolution of the population III stars, which includes the stellar
collapse and the resultant initial mass function.
2. Formation of primordial objects with taking into accounts the radiative feedback
around first luminous objects
3. Dynamical and chemical feedback by supernovae.
4. Inhomogeneous reionization of the universe based on multi-dimensional radiative
transfer calculations.
5. Formation and evolution of galaxies with focusing on UV background effects and
supernova effects.
6. Observations of high redshift universe, which include the IR background
7. IR emission by high redshift hydrogen molecules and dust
8. QSO absorption lines as tools to investigate the IGM
Program
Monday June 08th, 2002
09:25 A. FERRARA
Welcome
SESSION I : FIRST STARS AND OBSERVABLE EFFECTS
09:30 K. OMUKAI
10:00 M. UMEMURA
10:30 R. NISHI
11:30 R. SCHNEIDER
12:00 R. SALVATERRA
12:30
Formation of First Stars by Accretion
The IMF of Pop III Stars and its Influence on the Growth of First Objects
On the Formation Sites and the Mass Scales of Pop III Stars
First Stars, Black Holes and Particles: Signals from the Dark Ages
First stars and the Near Infrared Background
________ Lunch Break __________
SESSION II: PRIMORDIAL OBJECTS AND FEEDBACKS
14:30 F. HAARDT
15:00 B. CIARDI
15:30 T. KITAYAMA
16:30 H. SUSA
From first stars to reionization (via supermassive black holes)
Simulating IGM Reionization: Progresses, Problems and Promises
Radiative Feedback Effects on Primordial Galaxy Formation
Formation of Subgalactic Objects in the Presence of UV Radiation
Tuesday June 09th, 2002
SESSION III: GALAXY FORMATION AND EVOLUTION
09:30 H. HIRASHITA
10:00 A. YONEHARA
10:30 M. MORI
Effect of Dust Grains on High-Redshift Star Formation History
Toward Direct Detection of Substructure Around Galaxies
Inhomogeneous Metal Enrichment by Multiple Supernovae
SESSION IV: REIONIZATION AND RADIATIVE TRANSFER
11:30 T. NAKAMOTO
12:00 A. MASELLI
12:30
14:30 I. ILIEV
Toward a New Accurate Multi-dimensional Radiative Transfer Solver
CRASH: A new Cosmological RAdiative transfer Scheme for Hydrodynamics
________ Lunch Break __________
On the Direct Detectability of the Cosmic Dark Ages: 21-cm Emission from Minihalos
SESSION V: INTERGALACTIC MEDIUM
15:00 S. MARRI
15:30 M. BRUSCOLI
16:30 S. BIANCHI
17:00 P. RICHTER
Numerical Simulation of Galaxy Formation and Evolution in LCDM models: Energy Feedback and Metal Enrichment from Star Formation
Reionization - Background Radiation
IGM Metal Enrichment through Dust Sputtering
H_2 absorption line measurements in the Local Group
Wednesday June 10th, 2002
SESSION VI: GENERAL DISCUSSION
09:30 A. FERRARA
Summary & Overview of Collaborative Areas
> A GENERAL DISCUSSION FOLLOWS
PARALLEL GROUP DISCUSSIONS
10:30
The Seminar will now be split into a few parallel groups based on the
Collaborative Areas individuated in the previous discussion. Participants
can join one of the groups to which they feel they can contribute the most
with the aim of setting up a joint collaboration. One of the members of
such groups will report on the results of the discussion and possibly on
the general l ines of the research project selected for collaboration.
12:30
________ Lunch Break __________
PARALLEL GROUP REPORTS
16:30
The plenary session is resumed and a member of the groups will give
a ~10 min summary of the discussion
Parallel Discussion for Future Collaborations
AREA I. First Star
Chair M. Umemura
AREA II. Galaxy Formation and Feedback
Chair H. Susa
AREA III. Reionization/RadTrans/IGM
Chair B. Ciardi
AREA I. First Star
Possible Collaborations
Raffaella, Ruben, Nishi, Omukai, Mizusawa, Saigo*, Umemura
1. Role of Dark Matter for Fragmentation of Cylindrical Clouds (with Metal)
- Nishi, Omukai, MU, (Saigo)
DM: 3D N-body, hydrodynamics: 1D
2. Role of Dark Matter for Spherical Runaway in Early Phase of Collapse
- Nishi, Omukai, Susa, (Saigo)
3. Inverse Problem of Abundance Ratio to Place Constraints on the IMF
of Pop III Stars - Raffaella, Ruben, MU, (Nakamura)
abundance ratio of ICM, DLA (Si, O, Fe, Zn) = AREA III
consistency with IR background
4. High Mass Limit of Pop III Stars by Accretion
- Omukai, Raffaella, Mizusawa
metallicity dependence, time-dependence (RHD)
fragmentation
5. Spectrum of Pop III ZAMS with Accreting Envelop - Omukai, Ruben
color, IR background, reionization
6. BH Remnants interacting with Ambient Matter in PopIII Objects
- Nishi, Raffaella, Susa (Saigo)
Bondi (Hoyle-Littleton) accretion onto BHs
 radiative feedback for further SF
7. High-z GRBs - Raffaella, MU
all possible observational features
(-burst, X-ray burst, -CMB interaction)
(8.) VMBHs
gravitational lensing by intergalactic MBHs
less massive BH interacting halo stars
AREA II. Galaxy Formation and Feedback
Possible Collaborations
Hirashita, Kitayama, Mori, Marri, Richter, Sigward, Susa,Yonehara
1. On the Reliability of Large-scale Simulation of Metal Ejection - Mori, Marri
Two phase treatment of MSPH feedback
Adjust the parameter of MSPH by high resolution simulations.
2. GF Simulations with Dust and its Observational Possibilities
Hirashita, Mori,…
GF(SN) simulations + dust → how it looks like?
Hirashita, Susa,…
GF simulations by RSPH + dust (low metal)
Both of Low mass & High mass
3. DLA H2 Phase
Hirashita, Mori, Richter, Susa
Small fraction of H2 in DLA
→ small coverage factor
Numerical simulation of Forming galaxies with dust (product of numerical
simulations)
Find the detection probability of high H2 regions
4. Observed Dust Distribution in Galaxies and Reddening of QSO
Multiple Images
Richter,Yonehara
Observed distribution of dust in a galaxy
Evaluation of reddening of each image
→ Information on QSO microlensing
This is also for inter group collaborations with Bianchi, Ferrara…
AREA III. Reionization/RadTrans/IGM
1.
Comparison between different codes for the radiative transfer
Task Leader/Reporter: Ciardi
Suggested Members: Bianchi, Bruscoli, Ferrara, Iliev, Maselli, Nakamoto, Hiroi, Gallerani
Meeting Room:
Aula A
CRASH
CORAL
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any
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out of grid
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3D
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3D
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2D
ART
SOURCE
Point
Multiple
Background
Location
Spectrum
Evolution
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any
monochromatic
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GAS
H/He
Temperature
Re-emission
Distrib/Dynamic Range
ADDITIONAL
Hydrodynamics
Time dependent
Dimensionality
Common Test for the Codes
RUN I:
T  10 4 K
nH  10 3 cm 3
x  equilibriu m
N c  1283

N   10 48 phot s 1
L  6.6 kpc
Source position : corner
Spectrum : 13.6 eV
t sim  5t rec
RUN II:
Realistic density field
RUN III:
Realistic spectrum
DEADLINE:
October 31st!!!
Japan-Italy Seminar 2003
Formation of the First Generation of Galaxies: Strategy for the Observational
Corroboration of Physical Scenarios
December 1-6, 2003, Niigata University, JAPAN
Participants
Members on Italy Side
Members on Japan Side
Invited Speakers
Andrea Ferrara (Chair)
Raffaella Schneider
Marialuce Bruscoli
Simone Marri
Antonella Maselli
Ruben Salvaterra
西亮一 (Chair)，
中村文隆，
水澤広美 （新潟大）
梅村雅之，
中本泰史，
米原厚憲，
廣居久美子 （筑波大）
須佐元 （立教大）
森正夫 （専修大）
北山哲 （東邦大）
大向一行，
西合一矢（国立天文台）
平下博之（名大）
野本憲一，
梅田秀之，
岩本信之，
中里直人（東大）
吉田直紀，
矢作日出樹（国立天文台）
松原隆彦（名大）
釣部通（阪大）
小笹隆司（北大）
牧秀樹（立教大）
佐藤潤一，
川勝望，
Alex Razoumov（筑波大）
Organization
Welcome address: R. Nishi
SESSION I. FORMATION AND EVOLUTION OF FIRST STARS
SESSION II. FORMATION OF PRIMORDIAL OBJECTS
SESSION III. INHOMOGENEOUS REIONIZATION AND THERMAL EVOLUTION OF IGM
SESSION IV. FORMATION AND EVOLUTION OF GALAXIES
SESSION V. OBSERVATIONS OF HIGH REDSHIFT UNIVERSE
SESSION VI. FORMATION AND EVOLUTION OF SMBHs AND AGNs
SESSION VII: SUMMARY & OVERVIEW R. Nishi ?
SESSION VIII: PRENARY PANEL DISCUSSION
-------------------------------------------------------------------------------PARALLEL SCIENTIFIC DISCUSSIONS
PARALLEL REPORTS
Panel Discussion on Numerical Technique
Baryon  Dark matter(Stars)  Radiation  Enrichment
Hydrodynamics
Panelists
N-body
Radiative Transfer
Andrea Ferrara
Simone Marri
中村文隆
中本泰史
須佐元
森正夫
西合一矢
平下博之
中里直人
吉田直紀
矢作日出樹
釣部通
小笹隆司
佐藤潤一
Alex Razoumov
Chemistry
Chair: MU??????
Parallel Scientific Discussion
AREA I. First Star
Chair ?
Raffaella
AREA II. Galaxy Formation and Evolution
Chair ?
Mori, Yoshida
AREA III. Metal and Dust
Chair ?
Parallel Reports
15min/group
Andrea
日伊セミナー
第一世代銀河の形成： 物理的シナリオの観測的実証へ向けての戦略
（Formation of the First Generation of Galaxies:
Strategy for the Observational Corroboration of Physical Scenarios）
科研費基盤（Ｂ）「第一世代天体形成の包括的研究」H15－H17
梅村 雅之，中本 泰史，西合 一矢，西 亮一，中村 文隆，須佐 元
Thank you

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